Manbtee of securing the bits of bench-pl awes



'SEELY' L LOC'KE.

i ,Bench Plane. No. 24,335. Patented 11m@ 7, 1859.

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UNTTED STATES PATENT OFFICE.

CHAS. W. SEELY AND BIENJ. F. LOCKE, OF WELLINGTON, OHIO.

MANNER OF SECURING THE BITS 0F BENOIT-PLANES.

Specification of Letters Patent No. 24,335, dated June 7, 1859.

To all whom it may concern:

Be it known that we, CHARLES WV. lSEELY and BENJAMIN F. Locxn, ofWellington, in the county of Lorain and State of Ohio, have invented anew and Improved Plane- Bit for Planing lVood; and we do hereby declarethat the following is a full and exact description thereof, referencebeing had to the accompanying drawings and the letters of referencemarked thereon.

The nature of the invention consists in adjusting a steel bit between acap and bed piece, which cap and bed piece are similar to the common capand plane bit now gen* erally used, and usually designated as the doubleplane bit. Our bit is manufactured entirely of steel and therefore weavoidthe injurious effect produced upon steel, by the great heat towhich it is necessary to subjectit, to weld it upon iron; and thus weobtain a much finer and keener edged implement than can be obtained fromthe common method of manufacturing plane bits. Our

i bit also requires much less grinding than the common bit, and can bemanufactured at less expense. l

To enable others skilled in the art to make and use our invention, weproceed to describe its construction and operation.

This bit is manufactured of steel only, and is a thin plate varying froma sixteenth to an eighth of an inch in thickness, or thereabout, and ofthe usual width, with a notch in the middle of the upper end for thepassage of the fastening screw. Each opposite corner of the notched endof the bit is turned down to form spurs to mesh into grooves or notches,in the bed piece, which see Figure 2 in the diagram letters a a whichrepresent the steel bit and the corners.

The bed piece is represented by Fig. 1 of the diagram, is made of ironof the same width of the steel bit, and of the length of the commonplane bit. The notches or grooves a a are for the spurs on the steel bitto mesh into, and are made about `onefourth the width of the bed piecefrom each edge thereof, and are exactly parallel. These and the spurs onthe steel bit, are to prevent the bit from slipping up when force isapplied for planing. The circular hole and notch in the bed piece is thesame as in common use, and is for the entrance of the screw, by whichthe three pieces are fastened together as seen in Fig. 4L.

The cap is made in the same manner, and like the common cap now in use,with 'the exception of a bar of iron just above the screw hole, and tobe of the thickness of the steel bit, which is welded or riveted on theinner surface of the cap. This cross piece or bar is to prevent the capfrom pressing upon the upper end of the steel bit, and

thus prying apart the lower ends when the three are joined by the screw;instead of this cross piece or bar any means of making an elevation onthe same surface of the cap may be used. This cap with the cross pieceor bar is represented in Fig. 3 letter a and is also seen in Fig. 4Lletter c. The mashing of the spurs on the steel bit into the grooves onthe bed piece is seen at a Fig. 4.

7e do not not claim broadly the interposition of a steel planing bitbetween a cap and bed piece, as this already has been done, but

What we claim, is-

Stopping the upper end of the interposed bit below the screw, andupsetting it, so as to catch into the cross serrations in the bed piece,as set forth.

CHARLES W. SEELY. BENJAMIN F. LOCKE. Vitnesses:

JONATHAN ARNATT, J. L. HUTcHIN'soN.

